Question

If A and B are two events such that P(A)=0.2 , P(B)=0.4 and P(A ∪ B)=0.5 , then value of P(A/B) is ?
(a)0.1 (b)0.25 (c)0.5 (d) 0.08

Answer 1

Answer:

0.1

Explanation:

p(a u b)=p(a) + p(b) – p(a n b)

0.5 =0.2+0.4–p(a n b)

0.5 =0.6–p(a n b)

p(a n b) =0.6–0.5

p(a n b) =0.1

Answer 2

Answer:

0.25

Explanation: